B39931B3919U410

Overview

The B39931B3919U410 is a Surface Acoustic Wave (SAW) bandpass filter manufactured by Qualcomm RF Front-End. It operates at a center frequency of 925 MHz with a bandwidth of 1.4 dB, designed for ISM applications. The component utilizes a 6-SMD, no lead package and supports board mount installation. It is RoHS compliant and belongs to the signal conditioning category under filters. The device is currently marked as obsolete and subject to discontinuation by the manufacturer.

Feature Summary

• Surface Acoustic Wave technology for efficient signal filtering
• Bandpass configuration optimized for ISM frequency bands
• Compact surface-mount packaging for space-constrained designs

Applications

• ISM band signal processing
• General purpose RF SAW filtering
• Portable device connectivity modules

Procurement Notes

This component is officially classified as obsolete by the manufacturer. Production has ceased, and availability is limited to existing stock or third-party distributors. Engineers should verify end-of-life status before finalizing designs. Alternative solutions must be identified immediately to ensure long-term supply chain stability and project continuity.

Selection Notes

Designers requiring active components should evaluate current Qualcomm RFFE portfolios featuring ultraSAW or TC-SAW technologies. These modern alternatives offer improved performance metrics and guaranteed supply chains. Selection should prioritize devices with confirmed production status and updated compliance certifications to meet future regulatory requirements.

Part Context

Part of the Qualcomm RF front-end filter portfolio, this SAW filter addresses specific ISM band requirements. It represents an earlier generation of acoustic filtering solutions compared to current ultraBAW and ultraSAW offerings. The component was integrated into various wireless communication systems prior to its obsolescence announcement.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the obsolete status, direct replacements require evaluation of newer Qualcomm RFFE filter series with compatible electrical specifications.